package com.webserver.core;

import java.io.IOException;
import java.io.InputStream;
import java.net.Socket;
import java.util.ArrayList;
import java.util.HashMap;
import java.util.List;
import java.util.Map;

/**
 * 该线程任务负责与指定客户端完成HTTP交互
 * 与客户端交流的流程分成三步：
 * 1：解析请求
 * 2：处理请求
 * 3：发送响应
 */
public class ClientHandler implements Runnable {
    private Socket socket;

    public ClientHandler(Socket socket) {
        this.socket = socket;
    }

    @Override
    public void run() {
        try {
            //读取客户端发过来的消息
            String line = readLine();
            System.out.println(line);

            String method;
            String uri;
            String protocol;

            String[] array = line.split("\\s");
            method = array[0];
            uri = array[1];//这里可能会出现数组下标越界异常!原因:浏览器空请求，后期会解决
            protocol = array[2];


            System.out.println("method:" + method);
            System.out.println("uri:" + uri);
            System.out.println("protocol:" + protocol);
//while (!(line = readLine()).isEmpty()){
//    System.out.println("消息头："+line);
//}

//1.2解析消息头
            Map<String,String> headers = new HashMap<>();

            while (true) {
        line = readLine();
        if (line.isEmpty()) {
        break;
    }
    System.out.println("消息头：" + line);
        array = line.split(":\\s");
        headers.put(array[0],array[1]);
}
            System.out.println("headers:" +headers);
        } catch (IOException e) {
            e.printStackTrace();
        }
    }
        private String readLine() throws IOException {
            InputStream in = socket.getInputStream();

            char pre = 'a', cur = 'a';
            StringBuilder builder = new StringBuilder();
            int d;
            while ((d = in.read()) != -1) {
                cur = (char) d;
                if (pre == 13 && cur == 10) {
                    break;
                }
                builder.append(cur);
                pre = cur;
            }
            return builder.toString().trim();
        }
    }

